Governor.



W. J. RICHARDS.

GOVERNOR.-

APPLICATION FILED APEZG, 1909.

96 9, 1 93, I Patented Sept. 6, 1910.

-' s SHEETS-SHEET 1.-

W. J. RICHARDS.

GOVERNOR APPLIOATION FILED APB.26, 1909.

969,193. Patented Sept/6,1910.

8 SHEETS-SHEET 2.

W. J. RICHARDS.

GOVERNOR.

I APPLICATION FILED APR. 26, 1909. 969,193, r 7 Patented Sept. 6, 1910.

, {2 asHEB TB-SHBM a.

- UNITED STATES PATENT OFFICE.

WALTER JOSEPH RICHARDS, F MILWAUKEE, WISCONSIN, ASSIGNOR TO NATIONAL BRAKE & ELECTRIC COMPANY, or WISCONSIN.

( To all it may concern:

Be it known that I, WALTER J. RICHARDS,

residing in Milwaukee," in the county of Milwaukeeand State of Wisconsin, have invented new and useful Improvements in Governors, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide a switch. mechanism or governor. actuated by condition changes, such as the varia- 'tion in pressure in an air ressure system like the air brake system 0 a railway car,

'16 to control the operation of-th'e motor com-- pressor or the like, and adapted ,to accomplish a quick movement in one direction I upon the occurrence of a maximum c ndi 'tionand to effect a quick movement i the opposite direction upon the occurrence of a minimum condition.

The main object of the invention is to} provide such a governor which will be ighly sensitive to condition variations and which will accomplish its movements with speed to avoid destructive arcing at the switch contacts. v

A further object oftheinvention' is to provide an improved construction of the re- 80 spective parts of such governors whereby they become-more durable and efiicient'i'n use.

a I desire it;to' be understood that this invention is not limited to any specific form or arrangement of parts except in so far as such limitations are specified in the claims. "With the above and other objects in View the invention consists in the governor'herein claimed, its parts and combinations of parts' and all equivalents.

I 7 Referring to the accompanying drawings inwhich like characters of reference indicate the same parts in the difi'erent views; Figure 1 is a front elevation of a governor of this invention with the sheet nietal casing removed; Fig. 2 is a central-vertical v sectional View thereof withthe sheet metal easing in place and some parts sectioned out of the central plane for clearness of illustration; Fig. 3 is a plan view thereof with the sheet .metalcasing removed; Fig. 4 is a detail View showing one pole piece of the blow out magne't swung out ofits normal position to render the switch contacts accessible; and,

Specification of Letters Patent.

Application filed April 26, 1909. Serial No. 492,301."

GOVERNOR.

.Fig. 5 is a sectional detail view of the pivotal connection for the lever.

which is so formed 13. A plunger head 19 is contained within 'the chamber between thecylinder head 17 diaphragm, and is'pro vided with upstandlugs 20 on its upper surfacewhich pass openings'in the cy1-; inder head and bear upon 'a spring pressed.

through corresponding plate 2l'which is within the cylinder. A

plate'21and at its upper end it engages'a ing yoke24 the ends of which pass through have adjusting screws 26 threaded therein with theirheads engaged in slotted-lugs27 of spring 22.

' The compressed air beneath the diaphragm 13, which is received from vI the connection serves to move the plunger, head 19 upwardly sure is suflicient to overcome the pressure of the coil spring 22. of the plunger head are utilized for operat-: ing a switch through a system-of leverage Which will multiply the degree of movement to make it available for that purpose. A

plunger stem 28 is secured to the and loosely passes through the head 17and the plate 21 as well as the plate 23 and'the yoke '24 and the top the cylinder. At its upper end it is pivotally through lever 30 which is fulcrumed close by on a pin 31 between lugs 32 and 67 on theftop Patented Sept. 6, 1 910.

In these drawings 10 indicates a base coil spring 2 2bears at its lower end on'thw similar plate 23 which is held by an" adjustslots the sides of the cylinder and with a compressed air reservoir or the like,

and thereby lift the plate 29 when tl1e;pres-.

MILWAUKEE, wiscoNsIN, AooRroRArIoN or g I ing upon the edges of the rubber diaphragm and the rubber diaphragm, being rounded. on its under surface where it bears on the 0n the sides of the cylinder. By turning the screws 26 the yoke 24 may be raised or low-j ,,ered in the slots 25 to vary the compression Such upward movements plun er cylin er connected by a pin 29 to the short end-of a throw thehammer member 36 the engagement of the stud of the cylinder with its longer arm extends ing forwardly and downwardly to a position near the lower end of the casingwhere it is provided with one or more openings 33. A coil spring 34 connects with one of the openings 33 at its lower end and at its upper end it engages a lug 35 on the upperend of a hammer member 36 which is pivoted at 37 to the front of the cylinder 16. A switch member 38 is 'pivotall mounted at 39 to the front ofthe cylin er and is provided with an are shaped slot40 into which projects a stud .41 on the front of the cylinder to limit the-pivotal movements of the switch member, while astud 42 on the switch member projects into a slot or opening in the hammer member 36 to be engaged by said hammer member for, causing the movements of the switch member.

An u ward movement of the stem 28 produced y the pressure beneath the diaphragm causesit to lift the short end of lever 30 and thereby swing the long end of said lever to the right from the position shown in "Fig. 1, and as soon as the lower end of the spring 34 is carried beyond the line between the pivotal connection .37 of the "hammer member and the spring connecting stud 35, said spring 34 serves to forcibly to the right from its position shown in Fig. 1, to strike the-stud 42 of the switch member a hammer blow and quickly move said switch member to'the right from the position shown in Fig. 1, and these movements ofthe switch member and the hammer member are limited by 41 with theend of. the slot 40 of the hammer member. Likewise, a downward movement of the stem 21, due to a reduction in pressure beneath the diaphragm so that the spring 22 becomes 7 superior,

insulating causes the lever 30 to swing back toward the position shown in Fig. 1, and as soon as the lower end of spring 34'is again carried beyondthe'line of its connection 35 with thehammer and the pivotal connection 37 of the hammer, said hammer is forcibly thrown by the spring to the left and by striking the stud 42 witha hammer blow causes the switch member to also move to the left Quntil the parts are brou ht to rest in. the position shown in Fig. 1, y the engagement of the stud 41 with the end of The movements of the switch member 38 are caused to open and close switch contacts for controlling an electrical circuitwhich may be the circuit of a motor compressor for supplying the compressedair. 'A stationary contact 43 is supported on the end of a leaf spring 44 which is clamped on the end of an block 45 by means of a cleat46 which receives the end of a wire cable 47 entering the casing through. an insulating.

bushing 48 at the rear thereof, the insulatrecess 71' and then turn the magn .tliebolt 63 as a pivot to lift the arm to an ing block 45 being supported on a bracket extension 49 from the top of the cylinder.

An angularly bent movable contact 50 is carried on the end of an insulating arm 51, preferably of wood, which is connected by bolts 52 with the switch member 38, the

said movable contact being held on the arm 51 by means of bolts 53 which also hold a cable terminal 54 of a wire cable 55. De-

sirably a metal strap 56 passes around the end of the arm to form a connection between the cable terminal and the movable contact.

-The cable passes through anfi'nsulating bushmg 57 in a ring 58 on the switch mem-;.

ber 38 near its pivotal connection and also passes through a cleat 59 on the wall of the cylinder.

In order to drawn upon opening the switch, a blow out magnet is provided,-with one end of its winding connected with the wire cable 55 and the other end of itswinding connecteddisrupt the arc which may be with a wire cable 60 leading out of the casing through an insulating bushing 61 in the back thereof. The blow out magnet comprises a'magnet spool 62 which has a bolt,

63 projecting from its core and securing it to an upstanding lug 64 formin a part of the integral frame at thetopo the cylinder, there being a spring 65 surrounding said bolt and gearing at one end against the 111 64 and at the other-end against an b adjusting nut magnet spool with pressure. Another upstanding integral lug 67 on the frame forms one pole piece of the blow out magnet, the other pole piece 66 on the bolt to hold the being formed by a plate 68 which forms an mounted on the magnet spool arm ri idly c and 68 of the blow 62. The pole pieces 67 against the face of the lug 64 out magnet are provided with are deflect ing' guards 69 of insulating material which are spaced apart to permit of the movements upright position ass hown in F-ig. 4.. The four open sides of the frame may be inclosed by a sheet metal hood'orcover 72 the in a correg 64 and to t spool on which" fits around the edges of the back and bottom of the casing'formed by the frame '15 and may be held in place bya spring .to the casing,

catch 73 engagingalug 74 at the bottom of the frame. 1

The operation of the invention has been fully described incidental to the description of its various parts andfrom what has been stated it will be seen that the governor mechanism is extremely sensitive to the .fiuctuation of fluid pressure, having the slight movement of the plunger head greatly multip'lied by the relative distances from the pivotal center of the stem connection and the spring connection with the lever 30. During either its closed or open position the switch member 38 is held by the'action of spring 34 again t moving, but as soon as the lower end of said spring isswung to the other side of the line connecting the lug 35 and the pivotal connection 37 the effect. of the spring is to quickly swing the haminer member and cause it to strike a hammer blow on the stud of the switch member and throw the switch member by the combined effect of such blow and the continued pull of thespring 34 to its other position, thus opening or closingthe switch automatically with a quick and positive action and holding it in its new position with spring pressure until conditions change to cause it tobe thrown to its other position.

The presence of more than one of the openings 33 in the lower end of the leverSO is to permit of the adjustment of the .connection of the spring 34 with said lever t o the right. or the left to compensate t'or maccuracies in the positioning of the connect- .ing points of the lever and the hammer member.

The construction of the plunger head It) and the cylinder head 17 is such that when the pressure beneath the diaphragm is less than normal the said diaphragm relieved of the pressure of spiing'22, the plate .21 being limited in its downward movement by the cylinder head, I

lVhat. I clainias my invention is:

l. A governor forair pumps and the like, comprising a casing, a dished plate secured a plunger head working within the recess of the dished plate and provided with projecting through openings in the dished plate, a pressure flexed diaphragmbearingon the plunger head, a. spring pressed plate within the casing bearing on the ends of the lngs of the plunger head, and a movable circuit controller having connection with the plunger head to be operated thereby.

2. i-Ngovernor for air pumps and the like, comprising a cylindrical casing, a dished plate fitting in the end thereof, a plunger head working in the recess of the dished. plate and provided with lugs extending through openings in the dished plate, a pressure flexed diaphragm bearing on theplunger head. a spring contained within the ca lsthe In the en .01} the spring, a yoke member passfrom its closed position, v switch member cotipei'atlng with the piving, a spring plate bearing on the ends of of the plunger head and engaging in}; through openings in the sides of the cas in and bearing on the end of the spring, adJusting screws engaging the casing and the ends of the yoke member for adjusting the compression of the spring, and a'ci'rcuit controller having connection with the plunger head to be operated by the movements thereof.

3. A governor for air pumps and the like, comprising a casing, a pressure flexed diaphragm, a plungerhead bearing 011 the diaphragm, a coil spring within the casing for ap lying pressure to the plunger head, a

yo e member projecting through openings in the casing and bearing on the spring, ad-

justing screws engaging'the casing and the ends'ofthe yoke member to vary the compression of the spring, a stem connected to the plunger and passing through theyoke' member, and a movable circuit controller actuated by the movements of the stem.

{1. A governor for air pumps and the like, comprising a plunger sensitive to variations in air pressure, a suitably fulcrumed lever having connection with thejplunger stem, :1

spring carried by the longer end of the 1e ver, a pivoted hammer member to which the spring is connected', a. pivoted switch member in the path-of the hammer member to be struck thereby and forcibly moved to or and a stationary oted switch member to constitute a circuit controller. therewith. V

5. A governor for air pumps, and the llke,

comprising a plunger sensitive to variations in air pressure, .a casing through which the HlClll of the plunger passes, a. lever ful- ,crumed on the casing and having connection, with the plunger stem, a spring carried hy the longer end of the lcver,,a' pivoted hammer member to which the spring is connected at such a point that the axis of the spring will cross the axis of the hammer member during the movements of the lever and thereby cause. the hammer member to swing, a pivoted switch member in the path of the hammer member to be struck thereby,

and forcibly moved from its closed position, and a stationary switch member cooperating with the 'iivoted switch member to constitute a circuit controller therewith.

G. A governor for air pumps and the like, comprising a cylindrical casing, a spring pressed j'illlllg'ct therein sensitive to variations in air pressure, a. lover pi votally mounted 'on top o'f the cylindrical casing and having its short end connected with the plunger and its longer end extending toward theother end of the cylindrical casing on the outside thereof, a coil spring connected to the longer end of the lover, a haminer member pivot-ally mounted on the easfrom one side to the other of the axis of the hammer member whereby the hammer membet is caused to swing from side to side, a

- apart to allow for play of the pivoted switch member also pivotally mounted on the casing and provided with a projection to engage the hammer member at points spaced projection between'said engaging points, and a stationary switch member cooperating with the switch member to constitute a circuit controller therewith.

'7. A governor for air pumps and the like, comprising a casingr a pressure sensitive switch mounted on 'thdztsing and consisting of a stationary contact and a movable contact, a projection on-the casing,v a blow out magnet having a bolt pivotally mounted in on the bolt between the head and the proj ection, a pin and recess connection between the blow out magnet and the projection, a plate carried by the blow out magnet and forming the projection, a head on the bolt, aspring one pole piece] thereof, a projection on the a casing forming the other pole pieceofthe blow out magnet, and insulating deflector plates secured to the pole pieces of the blow out magnet and having the switch contacts I between them, the blow out magnetbemg capable of being moved against the of its spring to disengage its pin an connection and then turned to render the switch contacts accessible.

'ressure socket In testimony whereof, I affix my signature, in presence of two witnesses.

WALTER JOSEPH RICHARDS.

Witnesses: X j a W. K. BOYLE, A. V. Loose. 

